Tunnelling,
Service tunnels,
Transport tunnels,
Caverns, shafts
Bodio & Faido sections, Alptransit Gotthard Base Tunnel
used for boring in areas with convergences, unstable working face, seismic disturbances, and rock fall, with injections and boring in the opposite direction from the neighbouring tunnel tube. Exploratory boring with preventers for protection, cooling of underground workspaces. Interior construction (tunnel[...]